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The topic of subcarrier and power allocation in the downlink of an orthogonal frequency division multiple access decode-and-forward relaying system is presented with the objective of encompassing system stability and interference limitations in one inclusive problem. The introduced model is designed to maximize the overall throughput of the cell-edge users that are served by relay stations. We analyze...
In this paper we consider subcarrier allocation to relay-assisted users in an OFDMA wireless network. The two-hop downlink transmission is modeled as a network of queues in series. We have studied the queue length evolution at each hop and propose a rate control mechanism to stabilize the considered queues. To the best of our knowledge this is the first work that stabilizes the system without sending...
Supporting a high quality multimedia transfer has become a significant challenge for telecommunication industry. Numerous efforts have been done in different network layers to improve system performance based on real-time traffic transmission. The main contribution of this paper is to introduce a downlink packet scheduler for IEEE 802.16 standard MAC layer that improves the QoS of real-time traffic...
The IEEE 802.16 standard of wireless mesh networks includes various scheduling algorithms, both centralized and distributed, to determine the proper time slot that each wireless node can transmit its data. In this paper, we introduce a new scheduling scheme to improve scalability and resource utilization in wireless mesh networks where all nodes compete to gain access to the transmission time slot...
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